/Engine/Plugins/Experimental/PCG/Source/PCG/Public/Metadata/PCGMetadata.h
Advanced method. If you used AddEntryPlaceholder, call this function at the end of your MT processing to add all the entries in one shot. Make sure to call this one at the end!!
void AddDelayedEntries ( const [TArray](API\Runtime\Core\Containers\TArray)< [TTuple](API\Runtime\Core\Misc\TTuple)< int64, int64 >> & AllEntries )